Sharks and Rays In Peril
SHARKS AND RAYS IN PERIL 1/4 OF SHARKS, RAYS AND CHIMAERAS ARE THREATENED Information from: Dulvy et al. (2014). "Extinction Risk and Con- servation of the World's Sharks and Rays". eLife OVERFISHING THREATENS SHARKS AND RAYS Around the world, overexploitation – through targeted fisheries and incidental catches - is taking a toll on chondrichthyan fishes (sharks, rays, and chimaeras). Rays are at greater risk than sharks. Habitat loss is also a major threat to many species. Total catch, in tonnes, reported to the United Nations Food and Agriculture Organization (FAO) Total catch of all taxonomically identified chondricthyans reported to the United Nations Food and Agriculture Organization (FAO), and the increasing contribution of rays to this catch 300000 - 1000000 - rays All chondrichthyans (sharks, rays and chimaeras) 750000 - 200000 - sharks 500000 - - 0.4 - 0.2 100000 - 0.0 250000 - -- 0.2 1950 1960 1970 1980 1190 2000 2010 1950 1960 1970 1980 1190 2000 2010 24% EXTINCT EXTINCT IN THE WILD EXPERTS ESTIMATE 1/4 OF WORLD'S CHONDRICHTHYAN FISHES ARE THREATENED THREATENED SPECIES CRITICALLY ENDANGERED ADEQUATE DATA ENDANGERED VULNERABLE Through unprecedented global analyses, the IUCN Shark Specialist EVALUATED NEAR THREATENED Group (SSG) has estimated that one-quarter of the world's shark, ray, LEAST CONCERN and chimaera species are threatened DATA DEFICIENT with extinction (qualify for the IUCN Red List categories of Critically NOT EVALUATED Endangered, Endangered, or ALL SPECIES Vulnerable). 113 68 species are classified as Data Deficient 43 Vulnerable species are likely to be Threatened species are classified as 25 Endangered species are classified as Critically Endangered 107 species of rays are classified as threatened 74 species of sharks are classified as threatened "Chondrichthyans have the lowest percentage of 'Least Concern' species of any vertebrate group" CHIMAERA MOST THREATENED FAMILIES 1. Sawfishes (Pristidae) 2. Angel sharks (Squatinidae) 3. Wedgefishes (Rhynchobatidae) 4. Sleeper Rays (Narkidae) 5. Whiptail stingrays (Dasyatidae) 6. Guitarfishes (Rhinobatidae) 7. Thresher sharks (Alopiidae) Conservation policies must be improved, accelerated, and expanded to safeguard rays as well as sharks. The need for action is urgent. NUMBER OF THREATENED SPECIES BY HABITAT COASTAL/CONTINENTAL SHELF (ON SEAFLOOR) At least 150 # species 1-3 4-7 8- 13 14 - 18 19- 30 species regularly migrate across national PELAGIC (IN THE WATER COLUMN) boundaries # species 1-6 1/4 7-9 10- 11 12 - 15 13 of Threatened DEEPWATER species have a range that includes at # species 2 least 18 1-2 countries 3-4 5-6 Dulvy et al. 2014 "Extiction risk and conservation of the world's sharks and rays." eLife To learn more, download the open-access paper from ELIFE.ELIFESCIENCES.ORG IUCN SSC SHARK Specialist Group RED LIST Species Survival Commission IUCNREDLIST.ORG IUCNSSG.ORG INFOGRAPHIC PRODUCED WITH THE ASSISTANCE OF THE SAVE OUR SEAS FOUNDATION (Www.SAVEOURSEAS.COM). JANUARY 2014. shuipuei Ae. shark landings IUCN EXTINCTION RISK
Sharks and Rays In Peril
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